@article{10_4153_CMB_1964_011_2,
     author = {Gomory, R.E. and Hoffman, A.J. and Hsu, N.C.},
     title = {Some {Properties} of the {Rank} and {Invariant} {Factors} of {Matrices*}},
     journal = {Canadian mathematical bulletin},
     pages = {85--96},
     year = {1964},
     volume = {7},
     number = {1},
     doi = {10.4153/CMB-1964-011-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1964-011-2/}
}